Receivables

3 Months Ended

Mar. 31, 2020

Receivables [Line Items]

Receivables

RECEIVABLES

Note 3(a) Accounts Receivable - Details for accounts receivable included on the balance sheets were as follows (in millions):

	Alliant Energy						IPL						WPL
	March 31, 2020			December 31, 2019			March 31, 2020			December 31, 2019			March 31, 2020			December 31, 2019
Customer		$100.8			$91.6			$—			$—			$90.6			$83.5
Unbilled utility revenues	68.9			82.1			—			—			68.9			82.1
Deferred proceeds	188.0			187.7			188.0			187.7			—			—
Other	47.7			48.0			17.8			16.3			29.6			31.4
Allowance for expected credit losses	(9.0		)	(7.3		)	(1.0		)	(1.2		)	(8.0		)	(6.1		)
		$396.4			$402.1			$204.8			$202.8			$181.1			$190.9

Note 3(b) Sales of Accounts Receivable - IPL maintains a Receivables Purchase and Sale Agreement (Receivables Agreement) whereby it may sell its customer accounts receivables, unbilled revenues and certain other accounts receivables to a third party through wholly-owned and consolidated special purpose entities. The transfers of receivables meet the criteria for sale accounting established by the transfer of financial assets accounting rules. As of March 31, 2020, IPL had $74 million of available capacity under its sales of accounts receivable program. IPL’s maximum and average outstanding cash proceeds (based on daily outstanding balances) related to the sales of accounts receivable program for the three months ended March 31 were as follows (in millions):

	2020		2019
Maximum outstanding aggregate cash proceeds		$96.0		$108.0
Average outstanding aggregate cash proceeds	23.6		81.0

The attributes of IPL’s receivables sold under the Receivables Agreement were as follows (in millions):

	March 31, 2020		December 31, 2019
Customer accounts receivable		$131.2		$124.7
Unbilled utility revenues	83.0		95.5
Other receivables	0.9		0.9
Receivables sold to third party	215.1		221.1
Less: cash proceeds	16.0		27.0
Deferred proceeds	199.1		194.1
Less: allowance for expected credit losses	11.1		6.4
Fair value of deferred proceeds		$188.0		$187.7

As of March 31, 2020, outstanding receivables past due under the Receivables Agreement were $26.2 million. Additional attributes of IPL’s receivables sold under the Receivables Agreement for the three months ended March 31 were as follows (in millions):

	2020		2019
Collections		$541.4		$555.8
Write-offs, net of recoveries	2.1		5.5

IPL [Member]

Receivables [Line Items]

Receivables

RECEIVABLES

Note 3(a) Accounts Receivable - Details for accounts receivable included on the balance sheets were as follows (in millions):

	Alliant Energy						IPL						WPL
	March 31, 2020			December 31, 2019			March 31, 2020			December 31, 2019			March 31, 2020			December 31, 2019
Customer		$100.8			$91.6			$—			$—			$90.6			$83.5
Unbilled utility revenues	68.9			82.1			—			—			68.9			82.1
Deferred proceeds	188.0			187.7			188.0			187.7			—			—
Other	47.7			48.0			17.8			16.3			29.6			31.4
Allowance for expected credit losses	(9.0		)	(7.3		)	(1.0		)	(1.2		)	(8.0		)	(6.1		)
		$396.4			$402.1			$204.8			$202.8			$181.1			$190.9

Note 3(b) Sales of Accounts Receivable - IPL maintains a Receivables Purchase and Sale Agreement (Receivables Agreement) whereby it may sell its customer accounts receivables, unbilled revenues and certain other accounts receivables to a third party through wholly-owned and consolidated special purpose entities. The transfers of receivables meet the criteria for sale accounting established by the transfer of financial assets accounting rules. As of March 31, 2020, IPL had $74 million of available capacity under its sales of accounts receivable program. IPL’s maximum and average outstanding cash proceeds (based on daily outstanding balances) related to the sales of accounts receivable program for the three months ended March 31 were as follows (in millions):

	2020		2019
Maximum outstanding aggregate cash proceeds		$96.0		$108.0
Average outstanding aggregate cash proceeds	23.6		81.0

The attributes of IPL’s receivables sold under the Receivables Agreement were as follows (in millions):

	March 31, 2020		December 31, 2019
Customer accounts receivable		$131.2		$124.7
Unbilled utility revenues	83.0		95.5
Other receivables	0.9		0.9
Receivables sold to third party	215.1		221.1
Less: cash proceeds	16.0		27.0
Deferred proceeds	199.1		194.1
Less: allowance for expected credit losses	11.1		6.4
Fair value of deferred proceeds		$188.0		$187.7

As of March 31, 2020, outstanding receivables past due under the Receivables Agreement were $26.2 million. Additional attributes of IPL’s receivables sold under the Receivables Agreement for the three months ended March 31 were as follows (in millions):

	2020		2019
Collections		$541.4		$555.8
Write-offs, net of recoveries	2.1		5.5

WPL [Member]

Receivables [Line Items]

Receivables

RECEIVABLES

Note 3(a) Accounts Receivable - Details for accounts receivable included on the balance sheets were as follows (in millions):

	Alliant Energy						IPL						WPL
	March 31, 2020			December 31, 2019			March 31, 2020			December 31, 2019			March 31, 2020			December 31, 2019
Customer		$100.8			$91.6			$—			$—			$90.6			$83.5
Unbilled utility revenues	68.9			82.1			—			—			68.9			82.1
Deferred proceeds	188.0			187.7			188.0			187.7			—			—
Other	47.7			48.0			17.8			16.3			29.6			31.4
Allowance for expected credit losses	(9.0		)	(7.3		)	(1.0		)	(1.2		)	(8.0		)	(6.1		)
		$396.4			$402.1			$204.8			$202.8			$181.1			$190.9